Machine for making cork insoles



J. NUESKE, JR

MACHINE FOR MAKING CORK INSOLES Filed Sept. i, 1925 2 Sheets-Sheet 1 INVENTOR Julius" NueskqJr 1,642,690 Sept. 20,. J. NUESKE. JR

MACHINE FOR MAKING CORK INSOLES Filed Sept, 4, 1925 2 Sheets-Sheet 2 0 Q a .66 6968 a. I omfoooo' 0 G5 Tl'gf3 I ENTOR Juhus WueskeJr 49 w BY Patented Sept. 20, 1927.

UNITED- STATES 1,642,690 PATENT OFFICE.

JULIUS NUESKE, JB., OF NEW YORK, N. Y., ASSIGNOR T L. MUNDET 6c SON, INQ, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

MACHINE FOIRLMAKING CORK INSOLES.

Application fil ed September 4, 1925 Serial No. 54,391.

This invention relates. to a machine for making fabric covered cork insoles, and to the manufacture of said insoles.

l-leretofore, in the conventional fabric cove-red cork insole, theedges of the fabric covering have been pastedto the upper face of the cork sheet- This mode of fastening the parts together is comparatively expensive in time, material and effort, the pasting operation consuming a considerable amount .of glue or paste and being of necessity performed entirely manually.

My invention contemplates the production of a machine for making an insole wherein the edges of the fabric covering are secured to the cork sheet solely by mechanical means whereby the parts are inter locked, the necessity for pasting or otherwise cementing the parts'together being thereby completely eliminated.

he various objects of my invention will be clear from the description and from the drawings, in which,

Fig. 1 is a top plan view of my improved machine.

Fig. 2 is a vertical section of the same on the line 2-2 of Fig. 1. I

Fig. 3 is av similar partial view of. the same showing another position of the parts.

Fig. 1 is a vertical section on the line H of Fig. 1. i V

Fig. 5 is a bottom plan view of the locking plate.

I Fig. 6 is a topplan view of my improved insole, partly completed, the thicknesses of the material and of the slit being greatly exaggerated for clearncss, and

Fig. 7 is a vertical section of the same.

In the operation of my improved machine, the undersurface of the cork sheet 10 is completely covered with the fabric covering 11 which is made of material sufiiciently wide to cover the entire peripheral edge 12 of the cork sheet 10 and to reach on to the upper surface it thereof in the usual manner.

The edge portion 13 of the covering 11 is forced and wedged at intervals preferably without puncturing the covering into the materialof the cork sheet, andit is the structure whereby the cork sheet and the covering are wedged or interlocked together that forms one of the features of this inven'- tion. A cut or slit 16 of littlewidth and of edge 0 a depth preferably insufiicient to pass comp'letely through the sheet 10 is made in said sheet in any suitable manner as by means of a chisel-edged tool as will be more fully described hereinafter. If a portion of the covering 11 is then forced into and preferably down to the bottom of said slit 16, the elasticity of the cork is sufficient to cause the Walls of said slit to spring toward each other in the tendency of the cork to close the slit, whereby the material 17 forced into said slit is firmly gripped and retained in the slit between the walls 15. I

The covered corksheet may then be finished by the attachment thereto, in the usual manner, of-a covering sheet ofoilcloth, not shown, as by means of suitable stitching well known in the art.

In the machine embodying my invention I provide a sole plate 20 having an opening 21 therein of the pro er shape and size to conform to that of t e insole, said opening or depression being substantially of the same depth as that of the cork sheet'lO. Said plate is preferably mounted on a suitable anvil sheet as .22 of softer material, such as fiber secured on the bed 23 of the main frame 2a of the machine for the purpose of provid= inga comparatively soft anvil whereby the slitting teeth which may accidentally penetrate the cork sheet 10 would remain ininjured, as will be pointed out specifically hereinafter.

The operator first'arranges thepreviously shaped cork sheet 10 on the larger shaped fabric covering 11 and properly positions said sheet and covering so that said covering pro'ects substantially uniformly over the said sheet. He then inserts both pieces into the depression 21 whereby the edges 25 of said covering are forced to stand up above the surface of the depression 21, the covering being properly tensionecl about the under surface 9 of the cork sheet 10 simultaneously, as will be readily under-' stood.

Means are rovided for bending over the upstanding e ges 25 on to the upper surface l l of the sheet 10 before the pieces are secured together. Said means comprises the horizontally reciprocating end plates 26 for turning over the end portions 27 of the edges 25 and the side plates 28 arranged to reciprocate perpendicularly to the plates 26 for turning over the remainder of the upstanding edges 25. Since both of said plates 26 are substantially identical in structure, adescription of one will suffice for both.

Said plate.26 is secured as by means of the screws 27 to a slide .78 arranged to slide on the arm or extension 34 and provided with a slot 29 extending longitudinally thereof. Fixed in said slide 28 and extending across said slot is disposed the pin 30. Said'pin is arranged to operate in the cam slot 31 of the sliding cam 32, said cam reciprocating vertically in the slot 33 of the extension or arm 34 outstanding from the bed plate 23. The four-armed vertically reciprocating frame 35 has one of its arms 36 secured to the lower end of the sliding cam 32 as by means of the bolts 37, whereby the said cam is Vertically reciprocated on the reciprocation of said frame. An upright rod 38 ea cured to the center of said frame 35 is arranged for bodily movement vertically, and is designed to be lowered when it is desired to turn over the edges 25 of the fabric covering 11. Said rod is supported in a suitable bearing 39 in the main frame, a spring as 40 being interposed between said bearing and said frame and serving not only to take up undue pressure or excess motion which may be due to the movement of the rod38 too far downwardly, but also to return the parts to their initial position.

For reciprocating the side plates 28 horizontally toward each other, each of said plates is suitably secured to and underneath the plate frame 41 as by means of the screws 42. To the substantially horizontal central extension 43 on said plate frame isrevolubly secured a suitable roller as 44 operating i the slot 45 of'the bell-crank lever 46. An arm 47 projecting from the bed plate 23 serves as a support for said bell-crank lever, which is pivoted thereto as at 48. The link 49 connects the end 50 of said lever to the arm 51 of the four-arm frame 35. v ,I*"o11 guiding the side plate 28 in its peculiar reci'procatory movement a pair of similar links 52 and 53 are each pivoted at one end thereof to said frame, said links being pivoted at the lower ends thereof tothe bed plate 23 as by means of screws 54 and 55 respectively,

It will be seen that on the depression of the rod 38, and the consequent downward movement of the frame 35, the cams 32 are moved downwardly causing the end plates 26 to move inwardly toward each other and to fold over the. ends 27 of the covering 11, whilethe'links 49 are simultaneously depressed, rotating the bell-crank levers 46 about their pivots 48 and causing the side plates 28 to move inwardly towardeach other, the movement of said plates being controlled by the links 52'and 53.

Said links cause said plates 28 first to rise slightly until said links assume their upright position and then to move slightly downwardly to complete the folding operation whereby the upper edges of the upsoanding edges 25 are properly thrown over and the successful operation of the folding mechanism is assured. A U V I 3 After the edges 25 have been folded down on the-surface 14.0f the cork sheet, the notchinoor slitting hammer is then operated. aid hammer comprises the main plate 56, supported horizontally at all times for movement about the pivot points 57 and 58 on the arm 59 extending from the main frame 24 of the machine. lit the pivot points 57 and 58 are secured the links '60 and 61 respectively, the upper ends of which links are pivoted to said plate 56 at the points 62 and 63respectively. To the under sideof the plate 56 is secured the punch plate 64 wherein are set the chisel-edged pins 65, saidpins being arranged at spaced intervals in such a mannerthat they contact with the folded edge 13 of the covering 11 between the peripheral edge thereof and the wall 12 thereof, in the lowermost position of saidplate. A bumper as 66 preferably of rubber is secured to said plate 64 inside of said pins totake up the shock causedby the lowering of said hammer with undue force. A series of spaced slots as 67; are made in the folding plates 26 and 28 whereby the peripheral edges of said plates are cut up into a series of tongues 74. The pins are arranged to register with and to pass through the slots 67 in the folding plates 26 and 28 whereby said pins may pass said folding plates into operative engagement with the folded edge 13 and the cork sheet 10, in the lowermost position of said ham mer.

The chisel edges 75 on the pins engage the folded edge 13 of the fabric. covering after said'edge has first been folded and held down on the surface 14 of the cork sheet l0 byjthe folding plates. l/Vhen the hammer is brought down to its lowermost position, the sharp edges form a slit 16 in the cork sheet and simultaneous-y stretch the fabric covering sufficiently to force part thereof in between the walls 15 of the slits without tearing or forming holes in the covering. The bumper 66 is so designed that the edges-75 do not pass completely through the cork sheet, but should they do so due to defects in said sheet or the use of undue force, the fiber anvil sheet 22 prevents injury to said edges.

The ends 76 of the plates 28 are preferably partly undercut as at 77 to'al'low the end plates 26 to pass there-under (Fig. 4) so that the entire edge portions 25 of the covering 11 may be properly folded. I prefer to so dosign the mechanism for operating the fold ing plates 26 and 28, that-the end plates 26' start to fold the ends 27 of the covering 11 so that the folding of the remainder of the edge portions 25 of the fabric covering may be completed and a substantially flat folded surface produced. It will be understood that any folds in the material of the covering occurring during the operation are flattened out on the operation of the side plates 28, particularly if the folding of the ends is begun before that of the remainder of the edge portions. Suitable means are provided for preventing side sway of the hammer plate" 56. In the form illustrated said'means comprises the shaft 68 supported'in the bearings 69 and 70 of said-hammer plate and carrying at the ends thereof the arms 71. At the end of each of said arms is provided the roller 72 adapted to engage the link 60, said roller being pressed into engagement with said link by means of the coiled springs 73 on the shaft 68, and serving to resist all movement of the hammer plate except bodily movement thereof about the pivot points 57 and 58.-

The operation of my improved machine is as follows:

' The cork sheet with the fabric covering thereunder and projecting uniformly therefrom having been inserted into the opening 21 of the plate 20, and the edges 25 of the covering having thereby been upraised to some extent, the rod 38 is depressed, thereby lowering the four-arm frame 35, which in turn lowers the earns 32 and the links 49. The pin 30, the slide 7 8 and end plate 26 are carried by said cam inwardly of the ma chine to fold the end'portions 27 of the covering, and the link 49 rotates the bellcrank lever 46 about its pivot 48 thereby moving the plate frame 41 and the side plate ,28 carried thereby first upwardly and inwardly about the link pivots 54 and 55 and then downwardly and inwardly to complete the folding. The hammer is then brought down with the necessary force whereby the covering is forced into the slits simultaneously formed in said cork sheet completing the assembly of the parts. The hammer is then raised into its initial position against the stop 79 and the rod 38 released, whereby the spring 40 carries the parts back into initial position in readiness for the repetition of the operation.

I do not wish to be understood as being limited to that specific embodiment of my improved machine shown and described, as I intend to claim the invention as broadly as may be permitted by the state of the prior art. 3

I claim:

1. In a machine for making insoles, a plate having a cut-away portion shaped to fit an insole and adapted to receive a fabric covering and a cork sheet, reciprocating means for engaging and folding'the'entiro edge of said covering on the top of said sheet at one time in a single reciprocation of said means, and means for locking said covering to said sheet.

2. In a machine for making insoles,

means for receiving a sheet and a fabric covering therefor, means for folding the edges of said covering, and means for forcing parts of said edges at spaced intervals into the interior of said sheet. I

'3. In a machine for making insoles, means for receiving a flat sheet and a covering, and adapted to raise the projecting edges of said covering on the insertion of the sheet and the covering into said means, means for folding said edges down ontos'aid sheet in a singlemovemen't, and means for simultaneously locking the peripheral edges of said-covering to said sheet at points around the periphery thereof.

4. In a machine for making 1nsoles, means for locking the covering of an insole to its body portion'comprising pins for forcing an imperforate portion of said covering into the body Iportion of said insole. Y

5. n a machine for making covered insoles, a series of chisel-edged pins, and means for supporting said pins and for forcing said pins into an insole, whereby'said pins carry parts of the covering for said in sole-into the body portion thereof, and allow said body portion to wedge said parts on the withdrawal of said pins.

6. In a machine for making insoles, means for folding a covering over the body portion of an insole comprising means for folding the projecting ends of said covering on to said body portion and means for folding the remainder of the projecting part of said COV, ering on to said body portion, and means operating upon the material of said covering for forming spaced slits in said body portion and for forcing said folded covering into said slits.

7 In a machine for making insoles, means for folding the edges of a covering on to a cork sheet, and means for'forcing said covering into said sheet and simultaneously making slits in said sheet at the points where said covering is forced thereinto.

8. In a machine of the character described,

means for folding a covering on to a cork edge substantially parallel to the line passing through the centers of-said pins, and of less thickness than the height of said pins for limiting the depth to hichsaid pins are permitted to pass into said cork sheet.

10. In a machine of the character described, means having a depression therein for receiving a sheet anda covering for the sheet, a folding plate having a slot there in, and means for reciprocating said plate in a plane above the receiving means for causing said plate to fold-the covering comprising ai'slotted can mountedfor reciproeatory'movement in the slot of said plate and a pin on said, plate engaging the cam slot of saidcam. a I 11 In. a machine, of the characterdescribed, means having a depression therein for receiving a sheet and a covering for the sheet, a folding plate, means for reclprocating said plate in a plane above the receiving means for causing said plate tofold the covering comprising a bell crank lever pivotally secured to said plate and means foroscili latingsaid lever, a series of parallel links each pivoted at one end thereofto said machlne for controll ng the movement of said plate, and means for plvotally securing the other end of each of said links to said plate.

18'. Ina machine for making insoles a re-: ciprocatory frame, a slotted end folding plate, means operatively connecting said plate and said frame for reclprocat ng Silld plate on the-movement ofsaid frame, a slot? ted side folding plate, means operatively' connecting said side; folding plate'to said frame, and edged pins adapted to pass throughthe slots of-said plates after said plates have completed the folding movement andpartway through said insole for making slits in said insole. f

1a. In a; machine for making insoles, means for folding the covering of a sheet thereover and for maintaining said covering in folded 7 position, and means for locking the entire peperipheral edge, of said covering to said sheet in a single movement. f 1

-15. In a machine for making insoles, a locking hammer comprising a plate, edged pins set at spacedintervals in and projecting" from said plate, an'da bumper I ro ecting from-said plate inside of, and of ess thickness than, the vheight of said pins.

16., In a machine of he character described, means for folding the projecting end of an insole covering over a cork sheet therefor comprising aislotted plate, and a slotted reciprocating cam operatively connected to said plate, means for folding the projecting sides of said covering .over' saidsheet comprising a slotted plate, and means for reciprocating said plate, and means adapted to pass through the slots of said plates in the in- Ward position of said plates for forcing parts of said covering into said sheet, comprising a series of edged pins, means for sup: porting said pins, and means for controlling the movementof said pin supporting means.

JULIUS nUnsKn, JR; 

